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CLIA '88 Proficiency Testing Limits


    
All Analytes
Analyte PT Limit
Alanine aminotransferase (ALT, SGPT)  +/- 20% 
Albumin  +/- 10% 
Alcohol, blood  +/- 25% 
Alkaline phosphatase  +/- 30% 
Alpha-1 antitrypsin  +/- 3 SD 
Alpha-fetoprotein  +/- 3 SD 
Amylase  +/- 30% 
Anti-Human Immunodeficiency virus  Reaction or nonreactive 
Antinuclear antibody  Target value +/- 2 dilution or (pos. or neg.) 
Antistreptolysin O  Target value +/- 2 dilution or (pos. or neg.) 
Aspartate aminotransferase (AST, SGOT)  +/- 20% 
Bilirubin, total  +/- 0.4 mg/dL or +/- 20% (greater) 
Blood gas p02  +/- 3 SD 
Blood gas pCO2  +/- 5 mm Hg or +/- 8% (greater) 
Blood gas pH  +/- 0.04 
Blood lead  +/- 10% or +/- 4 mcg/dL (greater) 
Calcium, total  +/- 1.0 mg/dL 
Carbamazepine  +/- 25% 
Cell identification  90% or greater consensus on identification 
Chloride  +/- 5% 
Cholesterol, high dens. lipoprotein  +/- 30% 
Cholesterol, total  +/- 10% 
Complement C3  +/- 3 SD 
Complement C4  +/- 3 SD 
Cortisol  +/- 25% 
Creatine kinase  +/- 30% 
Creatine kinase isoenzymes  MB elevated (present or absent) or Target value +/- 3 SD 
Creatinine  +/- 0.3 mg/dL or +/- 15% (greater) 
Digoxin  +/- 20% or 0.2 ng/mL (greater) 
Erythrocyte count  Target +/- 6% 
Ethosuximide  +/- 20% 
Fibrinogen  Target +/- 20% 
Free thyroxine  +/- 3 SD 
Gentamicin  +/- 25% 
Glucose  +/- 6 mg/dL or +/- 10% (greater) 
Hematocrit  Target +/- 6% 
Hemoglobin  Target +/- 7% 
Hepatitis (HBsAg, anti-HBc, HBeAg)  Reactive (positive) or nonreactive (negative) 
Human chorionic gonadotropin  +/- 3 SD or (positive or negative) 
IgA  +/- 3 SD 
IgE  +/- 3 SD 
IgG  +/- 25% 
IgM  +/- 3 SD 
Infectious mononucleosis  Target value +/- 2 dilution or (pos. or neg.) 
Iron, total  +/- 20% 
Lactate dehydrogenase (LDH)  +/- 20% 
LDH isoenzymes  LDH1/LDH2 (+ or -) or Target value +/- 30% 
Leukocyte count  Target +/- 15% 
Lithium  +/- 20% or 0.3 mmol/L 
Magnesium  +/- 25% 
Partial thromboplastin time  Target +/- 15% 
Phenobarbital  +/- 20% 
Phenytoin  +/- 25% 
Platelet count  Target +/- 25% 
Potassium  +/- 0.5 mmol/L 
Primidone  +/- 25% 
Procainamide (and metabolite)  +/- 25% 
Prothrombin time  Target +/- 15% 
Quinidine  +/- 25% 
Rheumatoid factor  Target value +/- 2 dilution or (pos. or neg.) 
Rubella  Target value +/- 2 dilution or (pos. or neg.) 
Sodium  +/- 4 mmol/L 
T3 uptake  +/- 3 SD by method 
Theophylline  +/- 25% 
Thyroid stimulating hormone  +/- 3 SD 
Thyroxine  +/- 20% or 1.0 mcg/dL (greater) 
Tobramycin  +/- 25% 
Total protein  +/- 10% 
Triglycerides  +/- 25% 
Triiodothyronine  +/- 3 SD 
Urea Nitrogen  +/- 2 mg/dL or +/- 9% (greater) 
Uric acid  +/- 17% 
Valproic acid  +/- 25% 
White cell differentiation  Target +/- 3 SD based on percentage of different types of white cells 

 

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